Improvement in looms



- NrTED STATES JESSE D. ooTfrEELL, oE MILEOED, MASSACHUSETTS, ASSIGNOE To`r l.EnEivEz'EE D. AND GEORGE DBAPER, OF SAME PLACE.

IMPROVEMENT IN LOONIS. I,

Specification forming partofLetters Patent No. 40,442, dated October 27, 1863.

' elevation, of a loom-frame, lay, warpbeam,

and warp-guide as made or -provided with my invention. Fig. 3 is a vertical section taken alongside of the crank-shaft ofthelay, and so as to exhibit the warp-guide and warp-beam with my said Warp-delivering mechanism applied to them.

In the said drawings, A denotes the frame of a loom, while B is the lay, and C the yarnbeam or warp-roller, and D the yarn or warp guide, or the support over and on which the warps rest in their passage from the warpbeam to the breast-beam E.

The warp roller or beam C is provided with a train of gears, a b c, for imparting rotary motion to it, they being arranged as shown in the drawings. A radial arm', F, turns freely on the shaft d of the gears b c, and carries near its outer extremity a pinion, G, and is provided with an abutment or stop, I-I, to arrest its upward movement, such abutment being made to project from the loom-frame.

At or near the middle of the radial arm F a lever-pawl, I, (formed in top View as shown in Fig. 4,) is jointed to a projection, e, rising upward from the said arm. This pawl at one end is so made as to engage with the pinion G in a manner to arrest rotary motion of thelatter. At its other end the lever-pawl I has a projection, f, to extend over and upon the shorter arm of a right angular rocker-lever, K, whose fulcrum is the shaft d, and whose superior or longer arm is connected with the lay B by means of a connecting-rod, L, hinged or jointed to both lever and lay. Furthermore, a retainingpawl, M, vis applied to the periphery of the gear c, and is supported'by and turns on a pin, g, extended from the Side of the frame A. This pawl should no t only be so constructed as to be capable of readily slipping out of action on the gear while the latter may be in the act of being V revolvedin one direction by means of the vradial arrii and its pinion during an vupward movement of them, but it should be made so'asfto hold the gear from revolving in an opposite direction.

The lever-pawl I is provided with an arm, N, which I term the retainer, it being formed so as to extend across the retaining` pawl M and keep' it in engagement with the wheel c during depression of the radial arm'F. A depressor or rod, O,`slidesfreely through the pin g. At its upper end thesaid rod O is jointed to the wrist of a'cra'nk' or arm, P,"'ex tended from one of the journals la lc of the yarn or warp guide D. At its foot thedepres'sor O rests on the projection f of' the lever-pawl I, the several Aparts above described being arranged with respect to one another as shown` in the drawings.

The yarn or warp guide `D is constructed in a peculiar manner. As generally madeit consists of a whip-roller,7 a horizontal shaft, and two arms projecting from the latter and supporting the journals of the whip-rol1er, the same being as shown in the United States Patent No. 36,029. In the use of this latter construction of the guide the warps rest both on the shaft and the whip-roller. The more the whip-roller may be depressed the more will the warps be wound on the shaft, and of course the greater will be the friction of the yarns or warps upon such shaft, over which they are usually strained very tightly.

My improved Warp-guide D is constructed so that any downward movement of the guide will tend to diminish rather than to increase its exte'nt of bearing-surface on the warps, and consequently either render the friction less or maintain it at about the same degree. My said improved guide D `consists ofa long plate, p, and the journals lc lo, extended from the opposite sides of the plate. Ihe plate p is curved transversely, and is so arranged that its yarn-bearing surface shall extend upward from or quite near to the common axis, or the prolongation of the axes of the two journals, the same being as shown in Fig. 5. By this construction of the guide,whenever its plate p may be depressed by the strain of the warps,

there will be littleor no sliding motion of the plate at r, the prolongation of the axes of the which has its fulcrnm c projected from apost,

w. An arm or lever, fr, projects from the warp-guide D, and immediately over the lever u and underneath a projection, y, fromA the said post. A pitman, z, extends from one lever, x, to the other, u, each lever being provided with a rack or series of notches for reloeption and adjustment of the pitman. By means of the two levers u and x the pressure of the spring on the guide will be equalized during the movements of the guide, and such pressure may be eitherincreased or diminished by moving the pitman either nearer to or farther from the spring.

' When the lay moves back and the harness is sprung, the tension of the warp upon the warpguide D will depress it, andthereby cause the depressor `O to press down upon the threearmed lever-pawl I and trip it out of action with the pinion G. This threearmed lever having its fulcrum upon the radial arm F, which supports said. pinion, the tendency of the pressure will be not only to raise the pawl out of the pinion, but at the same time press the retainer N against the pawl Maud maintain it in the large gear c, and thus prevent such gear from being revolved by the tension of the yarnvor Warps on the beam when the lever pawl I may be disengaged from the pinupon it by the depressor O.

ion G. During the disengagement of the lever-pawl I from the pinion the radial arm F, Which sustains the pinion, will drop down by its own weight combined with the pressure It will drop one or more teeth or none at all, according to the strainpupon the warp-guide.v When the layv moves forward, it will cause the lever K uponv lthe shaft of the principal gear, c, to press upward the lever-pawl I and the radial arm which sustains the pinion-gear, and as the latter will be held by the pawl from turning around it will rotate the gear c, whereby the Warp-beam will be turned around so as to let oft' or deliver the yarn or warp.

1. The combination for operating the train of gears of the warp beam, the' same consisting of the radial. arm F and its pinion G, the

lever-pawl I and its retainer N, the retainingpawl M, `the depressor O, and the rocker-lever K, the Whole being applied to the lay and the warp-guide substantially as and so as to operate as described.

2. The combination and arrangement of the two arms or levers u :v vand their pitman z with the spring s and the warp-guide D, also the combination therewith of the toothed racks or their equivalents to receive and hold the pitman and admit of its adjustment, for the purpose set forth.

JEssE D. corTRELL.

Witnesses:

T. G. KENT, LEWIS FALEs. 

